Figure 2From: Utilization and spending trends for antiretroviral medications in the U.S. Medicaid program from 1991 to 2005Utilization of PI Antiretrovirals by Quarter in Medicaid: 1991–2005. Note: Other PIs include Agenerase®, Aptivus®, Crixivan®, and Invirase/Fortovase®.Back to article page